This application discloses a method for a handover of a mobile station between a source base station and a target base station. The target base station receives a handover request message from the source base station. The handover request message includes quality of service (QoS) information of the mobile device, radio bearer identifier information of the source base station, and a first mapping relationship between a flow and a radio bearer of the source base station. The target base station sends a handover acknowledgement message to the source base station.

In order to provide a communication system capable of charging control in accordance with a bearer used by a UE even when the UE performs dual connectivity, a communication system according to the present disclosure includes a communication terminal (11) configured to communicate with a communication device (12) and a communication device (13) by using a different radio bearer for each of the communication device (12) and the communication device (13), and a control device (14) configured to determine whether to cause the communication device (12) to measure the traffic of each radio bearer.

A method for topology hiding is disclosed, comprising: receiving, at a gateway, the gateway positioned between a core network and a radio access network, a configuration information request from a base station; analyzing, at the gateway, a topology of the radio access network, the radio access network including the base station; grouping, at the gateway, the base station into a first group based on the topology; sending, from the gateway to the base station, a grouping message to indicate that the base station be placed in the first group; and terminating connections from the core network to one or more base stations in the first group at the gateway as a back-to-back proxy, thereby hiding the topology of the radio access network from the core network.

Embodiments of an Evolved Node-B (eNB), User Equipment (UE) and methods for communication are generally described herein. The eNB may receive, from a mobility management entity (MME), a path switch trigger message that indicates an identifier of an eRelay UE for a relay arrangement for an eRemote UE. The eNB may determine whether the eRelay UE is served by the eNB. The eNB may, if it is determined that the eRelay UE is served by the eNB, transmit a radio resource control (RRC) connection reconfiguration message to the eRemote UE. The RRC connection reconfiguration message may indicate a switch from a direct communication to an indirect communication between the eRemote UE and the eNB. The indirect communication may be through the eRelay UE in accordance with the relay arrangement.

Methods and apparatuses are disclosed for maritime communication. According to an embodiment, a management server obtains topology information about at least part of a topology of a network comprising multiple maritime vessels. The management server determines, for one or more target maritime vessels of the network, configuration information for service addressing or packet routing, based on the topology information. The management server sends the configuration information for service addressing or packet routing to the one or more target maritime vessels.

Systems, methods, apparatuses, and computer program products for controlling operations of an integrated access and backhaul (IAB) node are proposed. In some embodiments, an integrated access and backhaul node may receive a message indicating that a handover of the integrated access and backhaul node is to be performed; and stop admission of new user equipment to an active radio cell of the integrated access and backhaul node based on the message received.

A terminal apparatus includes a receiver configured to receive a radio resource control (RRC) reconfiguration message from a base station apparatus, and a controller configured to configure a parameter based on the parameter included in the RRC reconfiguration message. The parameter includes at least identity information of a target cell and a configuration of a subcarrier spacing, and the configuration of the subcarrier spacing is configured for each of the target cells.

One or more processors, operating in a source base station and/or a target base station, determines a change in the termination point from the source base station to the target base station for a radio bearer with a current count value according to data unit sequencing. The one or more processors determine (1806) whether a user equipment (UE) changes the data unit sequencing as a result of the change in the termination point. In a first instance, the one or more processors cause the target base station to apply (1810) the current count value to the radio bearer, in response to determining that the data unit sequencing does not change. In a second instance, the one or more processors cause the target base station to apply (1820) a new count value different from the current count value to the radio bearer, in response to determining that the data unit sequencing changes.

The communication control method includes making, by a first communication node including a relay node under the first communication node, an inquiry about cell IDs available in the relay node to a second communication node. The communication control method includes, in response to the inquiry, by the second communication node, determining a cell ID not colliding with the cell ID available in the second communication node from among the cell IDs available in the relay node, and transmitting the determined cell ID to the first communication node. The communication control method includes transmitting, by the first communication node, the determined cell ID to the relay node. The communication control method includes executing, by the relay node, movement processing by using the determined cell ID.

The present technique provides a first terminal device for exchanging signals with a wireless telecommunications network and a plurality of second terminal devices, the first terminal device configured to exchange signals with each of the plurality of second terminal devices, when the first terminal device provides a local cell for providing wireless connectivity for the plurality of second terminal devices, and to exchange signals with one or more infrastructure equipment of the wireless telecommunications network, and receive, from each of the plurality of second terminal devices served by the first terminal device when providing the local cell, suitability information indicative of the suitability of each of one or more other terminal devices or infrastructure equipment of the wireless telecommunications network to exchange signals with that second terminal device to provide for that second terminal devices another local cell.